Gosh.
Arnold is so very dated that I have no connections with it at all. I find it stuffy and pompous.
Of the other names, I like
Bernard (BERnard),
Gerard (GERard),
Arthur,
Douglas and
Roger, and I could warm up to
Walter.
I dislike
Harold,
Gerald,
Arvid (in an English context; fine in Scandinavia),
Donald,
Ronald,
Leonard and
Howard.
Dislikes, in order from Worst to Just OK:
Arnold,
Ronald,
Howard,
Donald,
Harold,
Gerald,
Leonard. The more I look at all those -ld names, the weirder they seem to be.